Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8506673 | Silica removal from pregnant leach solutions | James D. Gillaspie, David R. Baughman, Dennis D. Gertenbach, Wayne W. Hazen, George Owusu | 2013-08-13 |
| 8273237 | Method and apparatus for electrowinning copper using an atmospheric leach with ferrous/ferric anode reaction electrowinning | John O. Marsden, James D. Gillaspie | 2012-09-25 |
| 8114365 | Silica removal from pregnant leach solutions | James D. Gillaspie, David R. Baughman, Dennis D. Gertenbach, Wayne W. Hazen, George Owusu | 2012-02-14 |
| 7824633 | System and method for conversion of molybdenite to one or more molybdenum oxides | Peter A. Amelunxen, Chris Easton, Wayne W. Hazen | 2010-11-02 |
| 7736487 | Process for recovery of copper from copper-bearing material using pressure leaching, direct electrowinning and solution extraction | John O. Marsden, Christy Green, Wayne W. Hazen, David R. Baughman | 2010-06-15 |
| 7691347 | Silica removal from pregnant leach solutions | James D. Gillaspie, David R. Baughman, Dennis D. Gertenbach, Wayne W. Hazen, George Owusu | 2010-04-06 |